Tetragnatha is a genus of long-jawed orb-weavers found all over the world. It was first described by Pierre André Latreille in 1804,[4] and it contains hundreds of species. Most occur in the tropics and subtropics, and many can run over water. They are commonly called stretch spiders in reference to their elongated body form and their ability to hide on blades of grass or similar elongated substrates by stretching their front legs forward and the others behind them. The name Tetragnatha is derived from Greek, tetra- a numerical prefix referring to four and gnatha meaning jaw. Evolution to cursorial behavior occurred long ago in a few different species, the most studied being those found on the Hawaiian islands.[5] One of the biggest and most common species is T. extensa, which has a holarctic distribution. It can be found near lakes, river banks or swamps.[6] Large numbers of individuals can often be found in reeds, tall grass, and around minor trees and shrubs.

Tetragnatha
Temporal range: Palaeogene– Present
female T. extensa
Scientific classification Edit this classification
Domain: Eukaryota
Kingdom: Animalia
Phylum: Arthropoda
Subphylum: Chelicerata
Class: Arachnida
Order: Araneae
Infraorder: Araneomorphae
Family: Tetragnathidae
Genus: Tetragnatha
Latreille, 1804[1]
Type species
T. extensa
Species

320, see text

Synonyms[1]
  • Arundognatha Wiehle, 1963[2]
  • Eucta Simon, 1881[2]
  • Prionolaema Simon, 1894[3]

Tetragnatha species are hard to separate from each other without a microscope to scrutinize the genitalia of a mature individual.[7] Hawaiian Tetragnatha appear to distinguish each other via highly specific chemical compounds in their silk. These chemical differences are especially prominent amongst sympatric and closely-related species. This may constitute a form of chemical species recognition.[8]

Cursorial species found on Hawaiian archipelago

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The Tetragnatha spiders found on the Hawaiian archipelago are believed to have no more than three colonization events, two from web building species and one from cursorial species. This is because a species of mainland Tetragnatha spider was found to be more closely related to web building spiders on the Hawaiian islands than the cursorial species.[5] This means that the divergence of web building and cursorial spiders must have occurred off the islands. There have been many events of cursorial evolution in various spider species around the world,[9] including a few Tetragnatha species, although many species have not been thoroughly studied. The factors leading to this change of behavior is not well understood, although study of the Hawaiian Tetragnatha species can lead to some suggestions. Environmental factors, such as landscape[10] and prey diversity play an important role in influencing the structure of webs in web building spiders.[11] This could be a reasonable explanation for the loss of web function and evolving to a cursorial behavior.

Species

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Unknown species
 
Tetragnatha species resting on jewelweed
 
Tetragnatha sp. mating
 
The eye arrangement of spiders in the genus Tetragnatha
 
Tetragnatha sp. juvenile in Texas
Pair of silver long-jawed orb weaver spiders interacting, laying silk and losing the cranefly they were consuming to ants

As of March 2021 it contains 320 species and ten subspecies, found all over the world, including Greenland:[1]

In synonymy:

  • T. aduncata Wang, 1991 = Tetragnatha hasselti Thorell, 1890
  • T. alba F. O. Pickard-Cambridge, 1903 = Tetragnatha laboriosa Hentz, 1850
  • T. amplidens Chamberlin & Ivie, 1936 = Tetragnatha elongata Walckenaer, 1841
  • T. andina Taczanowski, 1878 = Tetragnatha bogotensis Keyserling, 1865
  • T. anirensis Strand, 1915 = Tetragnatha biseriata Thorell, 1881
  • T. antillana Simon, 1897 = Tetragnatha nitens (Audouin, 1826)
  • T. apheles Chamberlin & Ivie, 1936 = Tetragnatha mexicana Keyserling, 1865
  • T. aptans Chamberlin, 1920 = Tetragnatha nitens (Audouin, 1826)
  • T. banksi McCook, 1894 = Tetragnatha guatemalensis O. Pickard-Cambridge, 1889
  • T. bemalcuei Mello-Leitão, 1939 = Tetragnatha bogotensis Keyserling, 1865
  • T. borealis L. Koch, 1879 = Tetragnatha dearmata Thorell, 1873
  • T. boydi O. Pickard-Cambridge, 1898 = Tetragnatha bogotensis Keyserling, 1865
  • T. boydi Tullgren, 1910 = Tetragnatha bogotensis Keyserling, 1865
  • T. caporiaccoi Platnick, 1993 = Tetragnatha nitens (Audouin, 1826)
  • T. casula Walckenaer, 1841 = Tetragnatha versicolor Walckenaer, 1841
  • T. cliens Chamberlin, 1924 = Tetragnatha nigrita Lendl, 1886
  • T. conformans Chamberlin, 1924 = Tetragnatha keyserlingi Simon, 1890
  • T. confraterna Banks, 1909 = Tetragnatha mandibulata Walckenaer, 1841
  • T. convexa Banks, 1898 = Tetragnatha versicolor Walckenaer, 1841
  • T. coreana Seo & Paik, 1981 = Tetragnatha vermiformis Emerton, 1884
  • T. culicivora Walckenaer, 1841 = Tetragnatha elongata Walckenaer, 1841
  • T. decipiens Badcock, 1932 = Tetragnatha nitens (Audouin, 1826)
  • T. dentigera F. O. Pickard-Cambridge, 1903 = Tetragnatha versicolor Walckenaer, 1841
  • T. earmra Levi, 1981 = Tetragnatha gracilis (Bryant, 1923)
  • T. eitapensis Strand, 1913 = Tetragnatha ceylonica O. Pickard-Cambridge, 1869
  • T. elmora Chamberlin & Ivie, 1942 = Tetragnatha nitens (Audouin, 1826)
  • T. ethodon Chamberlin & Ivie, 1936 = Tetragnatha keyserlingi Simon, 1890
  • T. festina Bryant, 1945 = Tetragnatha nitens (Audouin, 1826)
  • T. filiformis (Audouin, 1826) = Tetragnatha flava (Audouin, 1826)
  • T. foliifera Simon, 1898 = Tetragnatha demissa L. Koch, 1872
  • T. fraterna Banks, 1898 = Tetragnatha guatemalensis O. Pickard-Cambridge, 1889
  • T. fuerteventurensis Wunderlich, 1992 = Tetragnatha nitens (Audouin, 1826)
  • T. galapagoensis Banks, 1902 = Tetragnatha nitens (Audouin, 1826)
  • T. graciliventris Schenkel, 1963 = Tetragnatha mandibulata Walckenaer, 1841
  • T. grenda Roberts, 1983 = Tetragnatha demissa L. Koch, 1872
  • T. groenlandica Thorell, 1872 = Tetragnatha extensa (Linnaeus, 1758)
  • T. haitiensis Bryant, 1945 = Tetragnatha bogotensis Keyserling, 1865
  • T. harrodi Levi, 1951 = Tetragnatha dearmata Thorell, 1873
  • T. heatwolei Chrysanthus, 1975 = Tetragnatha bituberculata L. Koch, 1867
  • T. hotingchiehi Schenkel, 1963 = Tetragnatha nitens (Audouin, 1826)
  • T. huahinensis Berland, 1942 = Tetragnatha macilenta L. Koch, 1872
  • T. infuscata Benoit, 1978 = Tetragnatha mandibulata Walckenaer, 1841
  • T. intermedia Banks, 1898 = Tetragnatha guatemalensis O. Pickard-Cambridge, 1889
  • T. japonica Bösenberg & Strand, 1906 = Tetragnatha keyserlingi Simon, 1890
  • T. kaestneri (Crome, 1954) = Tetragnatha reimoseri (Rosca, 1939)
  • T. kochi Thorell, 1895 = Tetragnatha keyserlingi Simon, 1890
  • T. kovblyuki Marusik, 2010 = Tetragnatha shoshone Levi, 1981
  • T. laudativa Gertsch & Mulaik, 1936 = Tetragnatha guatemalensis O. Pickard-Cambridge, 1889
  • T. limnocharis Seeley, 1928 = Tetragnatha versicolor Walckenaer, 1841
  • T. listeri Gravely, 1921 = Tetragnatha keyserlingi Simon, 1890
  • T. mackenziei Gravely, 1921 = Tetragnatha vermiformis Emerton, 1884
  • T. maderiana Schenkel, 1938 (described as subspecies of T. extensa) = Tetragnatha extensa (Linnaeus, 1758)
  • T. mandibulata Gravely, 1921 = Tetragnatha bogotensis Keyserling, 1865
  • T. manitoba Chamberlin & Ivie, 1942 = Tetragnatha extensa (Linnaeus, 1758)
  • T. marianna Archer, 1940 = Tetragnatha versicolor Walckenaer, 1841
  • T. maxillosa Thorell, 1895 = Tetragnatha keyserlingi Simon, 1890
  • T. maxillosa Strand, 1911 = Tetragnatha keyserlingi Simon, 1890
  • T. modesta Hirst, 1911 = Tetragnatha ceylonica O. Pickard-Cambridge, 1869
  • T. munda Chamberlin & Gertsch, 1929 = Tetragnatha versicolor Walckenaer, 1841
  • T. necatoria Tullgren, 1910 = Tetragnatha mandibulata Walckenaer, 1841
  • T. nigrita Strand, 1906 = Tetragnatha praedonia L. Koch, 1878
  • T. nitens (Hogg, 1911) = Tetragnatha nitens (Audouin, 1826)
  • T. nitens Wiehle, 1962 = Tetragnatha bogotensis Keyserling, 1865
  • T. numa Levi & Levi, 1955 = Tetragnatha laboriosa Hentz, 1850
  • T. obtusa Kulczyński, 1891 = Tetragnatha dearmata Thorell, 1873
  • T. pelusia (Audouin, 1826) = Tetragnatha nitens (Audouin, 1826)
  • T. peninsulana Banks, 1898 = Tetragnatha bogotensis Keyserling, 1865
  • T. peruviana Taczanowski, 1878 = Tetragnatha nitens (Audouin, 1826)
  • T. petrunkevitchi Caporiacco, 1947 = Tetragnatha mandibulata Walckenaer, 1841
  • T. pinea Seeley, 1928 = Tetragnatha viridis Walckenaer, 1841
  • T. potanini Schenkel, 1963 = Tetragnatha extensa (Linnaeus, 1758)
  • T. producta (Franganillo, 1930) = Tetragnatha nitens (Audouin, 1826)
  • T. propioides Schenkel, 1936 = Tetragnatha keyserlingi Simon, 1890
  • T. punctipes Westring, 1874 = Tetragnatha dearmata Thorell, 1873
  • T. qiuae Zhu, Song & Zhang, 2003 = Tetragnatha shoshone Levi, 1981
  • T. quadridens Dondale, 1966 = Tetragnatha demissa L. Koch, 1872
  • T. ramboi Mello-Leitão, 1943 = Tetragnatha bogotensis Keyserling, 1865
  • T. recurva Schenkel, 1936 = Tetragnatha squamata Karsch, 1879
  • T. rusticana Chickering, 1959 = Tetragnatha extensa (Linnaeus, 1758)
  • T. sanctitata Walckenaer, 1841 = Tetragnatha elongata Walckenaer, 1841
  • T. seminola Gertsch, 1936 = Tetragnatha nitens (Audouin, 1826)
  • T. seneca Seeley, 1928 = Tetragnatha guatemalensis O. Pickard-Cambridge, 1889
  • T. shikokiana Yaginuma, 1960 = Tetragnatha vermiformis Emerton, 1884
  • T. siduo Chamberlin & Ivie, 1936 = Tetragnatha elongata Walckenaer, 1841
  • T. soaresi Camargo, 1950 = Tetragnatha longidens Mello-Leitão, 1945
  • T. steckleri Gertsch & Ivie, 1936 = Tetragnatha nitens (Audouin, 1826)
  • T. trapezoides Walckenaer, 1841 = Tetragnatha versicolor Walckenaer, 1841
  • T. tropica O. Pickard-Cambridge, 1889 = Tetragnatha elongata Walckenaer, 1841
  • T. valoka Chrysanthus, 1975 = Tetragnatha biseriata Thorell, 1881
  • T. vermiventris Schenkel, 1963 = Tetragnatha javana (Thorell, 1890)
  • T. vicina Simon, 1897 = Tetragnatha nitens (Audouin, 1826)

See also

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References

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  1. ^ a b c "Gen. Tetragnatha Latreille, 1804". World Spider Catalog Version 20.0. Natural History Museum Bern. 2019. doi:10.24436/2. Retrieved 2019-12-01.
  2. ^ a b Levi, H. W. (1981). "The American orb-weaver genera Dolichognatha and Tetragnatha north of Mexico (Araneae: Araneidae, Tetragnathinae)". Bulletin of the Museum of Comparative Zoology. 149: 282.
  3. ^ Dimitrov, D.; Álvarez-Padilla, F.; Hormiga, G. (2008). "Until dirt do us apart: On the unremarkable palp morphology of the spider Sternospina concretipalpis Schmidt & Krause, 1993, with comments on the genus Prionolaema Simon, 1894 (Araneae, Tetragnathidae)". Zootaxa. 1698: 51. doi:10.11646/zootaxa.1698.1.3.
  4. ^ Latreille, P. A. (1804). "Tableau methodique des Insectes". Nouveau Dictionnaire d'Histoire Naturelle, Paris. 24: 129–295.
  5. ^ a b Casquet, Juliane; Bourgeois, Yann X. C.; Cruaud, Corinne; Gavory, Frédérick; Gillespie, Rosemary G.; Thébaud, Christophe (2015). "Community assembly on remote islands: a comparison of Hawaiian and Mascarene spiders". Journal of Biogeography. 42 (1): 39–50. doi:10.1111/jbi.12391. ISSN 1365-2699. S2CID 83565719.
  6. ^ Hänggi, Ambros; Stöckli, Edi; Nentwig, Wolfgang (1995). Lebensräume Mitteleuropäischer Spinnen. Miscellanea Faunistica Helvetiae – Centre suisse de cartographie de la faune, Neuchatel. ISBN 2-88414-008-5.
  7. ^ "Tetragnatha montana". NatureSpot. Retrieved 4 February 2024.
  8. ^ Adams, Seira A.; Gurajapu, Anjali; Qiang, Albert; Gerbaulet, Moritz; Schulz, Stefan; Tsutsui, Neil D.; Ramirez, Santiago R.; Gillespie, Rosemary G. (10 April 2024). "Chemical species recognition in an adaptive radiation of Hawaiian Tetragnatha spiders (Araneae: Tetragnathidae)". Proceedings of the Royal Society B: Biological Sciences. 291 (2020). doi:10.1098/rspb.2023.2340. PMC 11003775.
  9. ^ Kallal, Robert J.; Kulkarni, Siddharth S.; Dimitrov, Dimitar; Benavides, Ligia R.; Arnedo, Miquel A.; Giribet, Gonzalo; Hormiga, Gustavo (2021). "Converging on the orb: denser taxon sampling elucidates spider phylogeny and new analytical methods support repeated evolution of the orb web". Cladistics. 37 (3): 298–316. doi:10.1111/cla.12439. hdl:11250/2754972. ISSN 1096-0031. PMID 34478199. S2CID 228966334.
  10. ^ Vandergast, Amy G.; Gillespie, Rosemary G.; Roderick, George K. (2004-04-27). "Influence of volcanic activity on the population genetic structure of Hawaiian Tetragnatha spiders: fragmentation, rapid population growth and the potential for accelerated evolution: POPULATION GENETICS OF HAWAIIAN TETRAGNATHA". Molecular Ecology. 13 (7): 1729–1743. doi:10.1111/j.1365-294X.2004.02179.x. PMID 15189199. S2CID 10090815.
  11. ^ Kennedy, Susan; Lim, Jun Ying; Clavel, Joanne; Krehenwinkel, Henrik; Gillespie, Rosemary G. (2019). Godoy, Oscar (ed.). "Spider webs, stable isotopes and molecular gut content analysis: Multiple lines of evidence support trophic niche differentiation in a community of Hawaiian spiders". Functional Ecology. 33 (9): 1722–1733. doi:10.1111/1365-2435.13361. ISSN 0269-8463. S2CID 182857924.
  12. ^ Koch, L. (1872). Die Arachniden Australiens, nach der Natur beschrieben und abgebildet [Erster Theil, Lieferung 3-7] [The Arachnids of Australia, described and illustrated from nature [Part I, Series 3-7]] (in German). Bauer & Raspe, Nürnberg. p. 190. doi:10.5962/bhl.title.121660.
  13. ^ Marples, B. J. "Spiders from some Pacific islands, II." (1957)

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